Ii e x r v  l



H. L. HANSO'N.

Lamp Burner. No. 69.091. Patend sept. 24, 1867.

JM M@ XO@ 5MG@ @nitro gisten atmtt @ffice ll E N lll-Y' l.. ll ANS() N, (lli P() ll-" l LA N l), MA I NE.

IMPROVEMENT IN LAMPS.

@te Stimuli etant tu in tipa jlutat about :mt linking part at tige sana.

T() ALL WHOM I'l MAY CONCEll-il:

Be it known that I, HENRY L. HANSOX, el" Portland, in the county of Cumberland, and State of Maine, have invented a new and useful Improvement indnuups; and I hereby declare the following to be a full, clear, and exactdescription thereoi", which will enable others to make and use tl panying drawings, forming' part of this specification, in which- Figure 1 represents a side elevation of a lump top with my improvement attached thereto. Figure :Z if; a view o` th(l top of' the glass cylinder in a lamp top il improvement.

le same, referencebeing had to the accomlustrating the method of attaching my Figure 5J is a. section ofthe top part of the salue.

Figure 1 shows the metallic detachable cone.

Same letters show like parts.

The superior excellence ot' glass' cones is well known, but they are still liable to a single disadvantage, which it is the purpose of my invention to correct, viz, the edges ofthe slet or slitin the top ofthe cone through which the flame protrudes when the lamp is burning is by the operation of the heat continually chipping, cracking, and breaking7 so that iu time the conc will become virtually useless by such continued breaking. There is a kind ot" these glass conesI which are set upon and are a part of a glass cylinder, and they are used in a lamp top similar to that represented in tig. l. My improvement has its intended application to such cylinder, or to a similar one, and it dispenses with the glass cone and its consequent inconvenience.

Upon the tcp of the cylinder I first construct a shoulder, a, around the edge ofthe circular opening in the top of said cylinder. I also make two recesses, b, in the edges of the opening, through the 'entire thickness of the glass of which the cylinder is formed. Upon this shoulder a rests the lower end of the detachable metallic cone, which is the subject of my invention, and into the recesses Z1 tit two ears, which project from the lower edge of said cone. c shows the cone, and Z the ears. In fig. l the cone is shown in position, the glass cylinder being represented by A. rlhe shoulder a and recesses b, together with the ears (Z, suilieiently confine the conc, allowing at the same time tllo necessary space for its expansion and contraction, in order that not being closely bound by the glass cylinder A there will be no liability of its cracking the same.

I do not, of course, claim the glass cylinder or the metallic cone except when constructed and combined as heretofore described, with a view to preserve as large a proportion of illumination fromthc lamp as possible, using at the same time the removable metallic cone to prevent the breaking and chipping, as before described. I do not claim a cylinder of mica. with a metallic rim at the top and bottom, the top rim having secured to it a-diaphragm constructed of a transparent material or a highly polished metal, such as is seen in the Patent of Joseph Ridge, April 15, 1802; neither do I claim the combination of this diaphragm with a cylinder of mica having a. perforated metallic bottom, and with a short chimney, as claimed in the third claim of said patent. In my invention I apply a removable metallic cone, having two ears, to a glass cylinder such as exhibited in the drawing, said cylinder having a shoulder around the inner edge et' the perforation or opening in its top, and having also two slots cnt into the edges of said opening to receive the ears on the cone. Should the cylinder become broken, the cone could he applied to another.

What l claim as my invention, and desire to secure by Letters Patent, is-

'lhe arrangement of the removable metallic cone on the glass cylinder, Set forth` Witnesses:

mman ll. Omrroue, 'Wim FRANK SuM-'m'.

HENRY L. HANSON.

in the manner and for the purposes 

